Expired Canadian patentCanada
New 7-azaindoles, their use as inhibitors of phosphodiesterase 4, and a method for synthesizing them
CA 2428468 C · Owner: Biotie Therapies Gmbh · Inventors: Marx, Degenhard; Polymeropoulos, Emmanuel; Egerland, Ute
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new 7-azaindoles their use as inhibitors of , phosphodiesterase 4 and to methods for their synthesis.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 25, 2001 and granted June 14, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 25, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 25, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 25, 2001
GrantedJune 14, 2011
Term endedOctober 25, 2021
Patent numberCA 2428468 C
Classification (IPC)C07D471/04 +2 more
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.